Before the modernization of ABAP in 7.40, a table lookup required an auxiliary variable and at least 4 lines of code.
Take this pre-populated internal table:
DATA(itbl) = VALUE t_t001( ( bukrs = 'COCA' butxt = 'Coca-cola' ) ( bukrs = 'PEPS' butxt = 'Pepsi' ) ).
This is what you had to do before 7.40:
DATA wa LIKE LINE OF itbl. DATA butxt TYPE butxt. READ TABLE itbl INTO wa WITH KEY bukrs = 'SPRI'. IF SY-SUBRC = 0. butxt = wa-butxt. ENDIF.
7.40 made it more elegante. No more auxiliary variable and one line of code. Except that we have to deal with the CX_SY_ITAB_LINE_NOT_FOUND exception even in the cases (like this one) in which we don’t care about it:
TRY. DATA(butxt) = itbl[ bukrs = 'SPRI' ]-butxt. CATCH CX_SY_ITAB_LINE_NOT_FOUND. CLEAR butxt. ENDTRY.
But now I found that we can use VALUE together with OPTIONAL to help us make it truly simple:
DATA(butxt) = VALUE #( itbl[ bukrs = 'SPRI' ]-butxt OPTIONAL ).
It’s easier to read and much easier to understand. This is beautiful code.
Greetings from Abapinho.